Recent content by grantP

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    Really stuck on a Gravitation Question

    oh...hmmmm i must have mixed up my signs...and doing 4 straight hours of physics homework probably didnt help...looking back at it 4 hours later I was probabaly so delerious haha. Well anyways thanks for the help on my threads.
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    Conceptual problem: Finding gravitational KE

    Homework Statement to find KE of an orbiting body, do I use 1/2mv^2 or 1/2Gm1m2/r?? Homework Equations The Attempt at a Solution
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    Really stuck on a Gravitation Question

    Homework Statement What minimum energy is required to raise a 1.7e3 kg vehicle from the surface of the moon to a height of 5.22e6 m? Homework Equations Ep= -G(m1m2)/r The Attempt at a Solution Ep(initial)= -6.67e^-11(1.7e^3 x 7.35e^22)/1.74e^6 = -4789750000 Ep(final)=...
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    High School MIT AP Physics + High School Videos

    oh wow thanks! ill definitely check all of these out.
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    High School MIT AP Physics + High School Videos

    As exam time is right around the corner I'm looking to "brush up" on the cirriculum of my physics 11 course... I have looked at many of the university videos on here, and although they are very interesting and broaden my physics perspective, they are far out of the scope of my course, so that...
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    Thermal Expansion of Metal Ball Problem

    thanks!
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    Thermal Expansion of Metal Ball Problem

    [SOLVED] Thermal Expansion Problem Homework Statement A metal ball is just able to pass through a metal ring. When the ball is heated thermal expansion will not allow it to pass through the ring. What would happen if the ring rather than the ball, were heated? Would the ball pass through...
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    Temperature Question (answ=neg#-?)

    ok so i think my answer should just simply be 945J instead of -945J because the negative implies that is what i lost, and evidently is exactly what was asked in the question! is this thinking right?
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    Temperature Question (answ=neg#-?)

    [SOLVED] Temperature Question (answ=neg#-?) Homework Statement A .03kg piece of iron is heated to 100 degrees celsius and then dropped into cool water where the iron's temperature drops to 30 degrees celsuis. How many joules does it lose to the water?(Specific Heat Capacity of...
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    As you move away from a lightsource

    well because wavelength is the distance between two successive points on waves right? well as you move away, the length dosent change, just the amount or possibly the frequency?
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    As you move away from a lightsource

    my guess would be the wavelength would stay the same, but I am not certain at all, anyone know?
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    As you move away from a lightsource

    As you move away from a lightsource... Homework Statement (from title) ...the wavelength of the light _______? (increase, stays the same, decrease, decrease in amplitude?) Homework Equations The Attempt at a Solution
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    What is the solution to this free fall gravity question?

    k got it
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    What is the solution to this free fall gravity question?

    well I am looking for velocity of the obj when it hits the ground, and the time as well, and i just assumed i needed to know the distance
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    What is the solution to this free fall gravity question?

    since i don't know the Distance of the obj.'s path (30+d) how would i go about figuring it out?